Jointing and matching cutter.



E. -H. WAUGH.

JolNTlNG AND MATCHING cuTTER.

APPLICATION FILED JUNE 30.1914.

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JOINTING AND MATCHING UTTER.

specification of Letters Patent.

Patented Feb. 13, 19177.

Application filed June 30, 1914. Serial No. 848,196.

To all whom z't may conccrn:

Be it known that I, EDwARD H. WAUGH, a citizen of the United States ofAmerica, and a. resident of the city of Seattle, in the county of Kingand State of Washington, have invented certain new and useful1mprovements in J ointing and Matching Cutters, of which the followingis a specification.

' The present invention pertains to cutters of the above character, ofimproved form, combined with rotary cutter heads, and it consists incertain novel features whereby a desired lateral delivery of the chipsis obtained and a more finished surface on the stock produced.

For a full understanding of the invention, reference is had to thefollowing specification and the accompanying drawing wherein:

' Figure 1 is a fragmentary plan of a matcher head embodying thefeatures of my invention. w

Fig. 2 is a side elevation thereof.

Figs. 3 and 4-. are fragmentary edge views of adjacent circular cutters,shownv as operating on the stock.

Fig. 5 is a fragmentary side elevation of one of the cutters.

Fig. 6 is an edge view thereof, and

Figs. 7 and 8 are elevations illustrating slightly modifiedconstructions.

In carrying out myv invention I provide a combined cutter construction,shown as embracing jointing and tonguing cutters having a common throatwhich fiares outwardly or laterally away from the tongue being worked Soas to deliver the chips laterally, or away from the cutter-edges therebyovercoming, or in a great measure overcoming, choking of thecutter-throat. Therefore the stock can be fed more rapidly withoutsplintering or tearing the matched face. Employing like characters ofreference to corresponding parts throughout the several views wherein, Ihave shown my invention incorporated in a double circular cutter or bitconstruction, 1 indicates a body of cylindrical or disk like body havinga transverse, peripheral cut-out 20, the bottom wall a of which merges,at its rear portion, in the throats or chip breaks Z) of cutting blades2, 2, which extend in the general direction of the axis of body 1 andare separated by the peripheral groove a.

r The active portions of the cutter have a particular form enabling theproduction of a smooth, even surface on the stock. In this connection itwillobe observed that blades 2, 2 have their'jointing cutter partsprovided with working faces 2f, 2' which are beveled rather sharply;under .these faces, which lead to throats Z) being of such width thatthey extend 'inwardly for a comparatively short distance. Throats Z)which are ground at an inclination to the longitudinal axis of body 1,are curved in cross sectlon, as shown,.to form effective' chip breaks,diverge and fiare' slightly from a point, as o, midway of the width ofgroove 4. Therefore, this inclination accomplishes a twofold function,first, ofdelivering 'the chips sidewise so that they will notbe crowdedin a forward direction, and second, it provides two beveled cuttingparts' 2" at the edge of groove 4G, extending from faces 2', toV thepoint c, which have a shearing action and thereby serve to smoothly cutthe outer portion of the side faces and the curved end face of thetongue on the stock. Another apparent advantage resulting from theprovision of these diverging throats is that the chips will be deliveredfrom both sides with aresultant balancing influence on the cutter.

One wall of the peripheral, tongue-forming groove, is made to conform tothe outline of the finished tongue, while at the other side, the grooveis enlarged, this wall lying slightly without' the correspondingfinished surface of the tongue. The edge at one side thus makes afinished cut, while the edge at the other side makes a roughing cut.These walls of successive cutters are alternated in position, so thatthe finish cut` 'head 7 and secured thereon by fasteners 8.

In the modified construction shown in Fig. 7 one of the blades, as 2ahas its jointing cutting edge inclined rearwardly outwardly from groove4 and the adjacent end portion of body 1, of which blade 2'nl is a part,is fiared outwardlv from groove 4 4:, thus making a conoidal, shape,whereby the entire Cutting edge of the blade Will be disposed in theplane of cut and, in operation, produce a shearing cut.

In the modified form shown in Fig. 8, both blades 2a andtb have theirCutting edges inclined parallel With the bottom walls of their throats,and both end portions of the body la are fiared or coned, such fiaredportions being inclined oppositely from groove 4. rfherefore, the entirecutting edges of both blades will lie in the plane of cut.

This invention is based upon three cooperating features which complementand supplement each other to produce a more perfect result. These are,first, the inclined position of the Cutting edges relative to the aXialand rotative alanes of the head: second, the inclination. of the throator chip-breaking surface lying inWardly of the cutting edge: third, tothe formation of the tonguing groove in the cutters so that one sideedge forins roughing cut and the opposite edge a' finishing cut, thesebeing reversed in position upon alternate cutters.

rhe first of these features gives the draw cut which gives smoothersurfaces and produces good surfaces in bad material. The second or'sideWise inclined throat contributes to a like 'result and as Wellproduces a better discharge of the chips; and the third producessmoother surfaces on the flanks of the tongues. g

Having thus described my invention, what claim as new, and desire tosecure by Letters Patent of the United States of America, is

1. A detachable cutter for a cutter head having throats formed on itsadvancing face inward from lthe cutting edge and inclined to an axialplane to form a forwardly facing apex.

2. A detachable cutter for a cutter head having its Cutting edgeprovided With a groove and throats formed on the advancing face inWardfrom the cutting edges and inclined to an aXial plane to make aforwardly facing apeX at the groove. i

3. A detachable disk cutter having a peripheral surface of conicalCharacter extending from a side face inward With the larger radius atthe outer' face and a transversely extending notch extending across saidsur-V face at an angle to form a Cutting edge which is inclined to anaXial plane with the rearwardly positioned end of said cutting edge atthe side of said conical Surface which is of largest radius.

4. A cutter head comprising a rotative cutter-carrying body, and aseries of cutters adjustably mounted about the periphery of said body,said cutters each having tivo separated jointing edges and a forininggroove connecting said jointing edges, the oppositesides of said grooveconforming respectivelj,7 to roughing and finishing shapes and alternatecutters, as mounted upon the body, having said roughing and finishingedges reversed in position.

Signed at Seattle, Washington, thisil7th day of June 1914.

EDVARD H. VVAUGH.

Copies of this patent may be obtained for five cents each, by addressngthe Gommissioner of Patents, Washington, D. 0.

